topic Re: Data step containing ^ operator in SAS Programming

Data step containing ^ operator

knveraraju91 — Mon, 16 Jul 2018 01:40:32 GMT

Dear,

I saw the below pgm containing "not ^first.rsdtc and ^ last.rsdtc;" I did not understand why it has 'not' and '^'. Both meaning same. Please help me understand the logic. Thank you

 data check;
 set rstest;
  by usubjid rsdtc;
  if not ^first.rsdtc and ^ last.rsdtc;
  run;

Re: Data step containing ^ operator

ChrisNZ — Mon, 16 Jul 2018 04:28:37 GMT

That's just bad programming.

Maybe they meant

if not ( ^first.rsdtc and ^ last.rsdtc );

which is bad programming too as it's really difficult to read.

Or maybe they changed the code and forgot to remove something. Who knows?

In any case the program line you mention is that same as

if first.rsdtc and ^ last.rsdtc;